ExtractBand

Zusammenfassung

Creates a raster object by extracting one or more bands from, or reordering the bands in, a multiband raster.

Auswertung

For more information about how this function works, see the Extract Bands raster function.

The referenced raster dataset for the raster object is temporary. To make it permanent, you can call the raster object's save method.

Syntax

ExtractBand (raster, {band_ids}, {band_names}, {band_wavelengths}, {missing_band_action}, {wavelength_match_tolerance})

Parameter	Erklärung	Datentyp
raster	The input raster.	Raster
band_ids [band_ids,...]	Extracts bands using the band ID. (Der Standardwert ist None)	Integer
band_names [band_names,...]	Extracts bands using the name of the bands. (Der Standardwert ist None)	String
band_wavelengths [band_wavelengths,...]	Extracts bands using the band wavelengths. (Der Standardwert ist None)	Double
missing_band_action	Specifies the action that will occur when a band within the extract band list is not available. BestMatch —This option will try to find the best available band to use in place of the missing one, so that the function will not fail. Fail —Any mosaic dataset item that is missing a specified band will fail, since the extract band was invalid. (Der Standardwert ist BestMatch)	Integer
wavelength_match_tolerance	Specifies the margin of error when extracting bands using the band_wavelengths method. (Der Standardwert ist None)	Double

Rückgabewert

Datentyp	Erklärung
Raster	The output raster.

Codebeispiel

ExtractBand example 1

Extracts bands from the input raster using the band_ids method.

import arcpy

out_bands_raster = arcpy.sa.ExtractBand("in_raster.tif", [1, 2])

ExtractBand example 2

Extracts bands from the input raster using the band_wavelengths method.

import arcpy

out_bands_raster = arcpy.sa.ExtractBand("in_raster.tif", band_wavelengths=[500.00])